/* visited count */
function record_visitors()
{
	if (is_singular())
	{
	  global $post;
	  $post_ID = $post->ID;
	  if($post_ID)
	  {
		  $post_views = (int)get_post_meta($post_ID, 'views', true);
		  if(!update_post_meta($post_ID, 'views', ($post_views+1)))
		  {
			add_post_meta($post_ID, 'views', 1, true);
		  } 		
	  }
	}
}
add_action('wp_head', 'record_visitors');
 
///function：post_views
///comment：get reading times of the article
function post_views($before = '  ', $after = ' views', $echo = 1)
{
  global $post;
  $post_ID = $post->ID;
  $views = (int)get_post_meta($post_ID, 'views', true);
  if ($echo) echo $before, number_format($views), $after;
  else return $views;
}

$byline = '<span class="byline">%1$s<span class="author%8$s" %5$s><span class="author-name"%7$s>%4$s</span></span></span> <span class="posted-on">%9$s</span>';

post_views()